❀The Crack Gauge Set is a durable and reliable measurement tool for monitoring cracks ❀acrylicy material, this crack gauge monitor is wear resistant and not easily breakable ❀Suitable for DIY enthusiasts and professionals, this precise Measuring Tool is perfect for measuring gaps and monitoring crack development ❀This crack gauge monitor can be used in various scenarios such as home improvement projects and interior decoration ❀Whether you are a professional or a homeowner, this Monitoring Device is a must have tool for detecting wall deformations and cracks